Daniel Radcliffe was a guest on "The Tonight Show" Tuesday night, to promote his latest movie "Horns." During the conversation, Fallon points out that Radcliffe is a huge music fan. More specifically, Radcliffe is a big fan of rap, and he spends time learning complicated lyrics -- the more difficult the better.
Fallon then asks if Radcliffe knows all the lyrics to Blackalicious' "Alphabet Aerobics."
"You know how to do that whole song!?" Fallon exclaims. "That's one of the trickiest, fastest songs I know."
Fallon then pulls out a microphone, challenging Radcliffe to demonstrate. The performance is nothing short of magical. Watch below: